Utilizing VXB005100BTPR makes it feasible to pull and push items instead of transport And rolling on wheel that has 100mm diameter/3.937" inch. Dimensions of the caster wheel is 50mm (1.969" inch). The Caster with the wheel from end to end is 142mm = 5.591" inch. Mounted via a Top Plate that has the size of 100mm x 115mm and the holes distance of 75mm x 85mm. This caster wheel core material is Thermoplastic Rubber and has a Thermoplastic Rubber tire spinning over Double ball beaing. Maximum load calpacity that should not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 441 lb with a Swivel type. Environment temperature range is -40 to 180 F. Buy our VXB005100BTPR, we wish all the best.